Chef Soulfflé is the fourth boss encountered in Luigi's Mansion 3. He is encountered and fought on the second floor after Luigi locates him in the Mezzanine kitchen. Defeating Chef Soulfflé rewards Luigi with the elevator button to the fourth floor, after retrieving it from some Mice. His name is a pun on "soul" and "soufflé".


Chef Soulfflé is a ghost with an appearance similar to that of a normal chef. He has unruly brown hair, a large messy brown mustache, and turquoise eyes and mouth.

Luigi and Gooigi end up exposing Chef Soulfflé after sucking up a huge amount of smoke. After discovering Luigi and Gooigi in his kitchen, he drops the fish he was flipping and angrily confronts them.